# What is the difference between functions and relations?

The question ask - in the real world, what might be a situation where it is preferable for the data to form a relation but not a function?

Also, if the variables in an equation were reversed, what would happen to the graph of the equation? This was the example I was given, how would the graph of y = xÂ² relate to the graph of x = yÂ²? When might such a reversal of variables be useful in the real world? I dont understand the questions, can this be explain in detail? Thanks

Â© BrainMass Inc. brainmass.com February 24, 2021, 2:37 pm ad1c9bdddfhttps://brainmass.com/math/graphs-and-functions/what-is-the-difference-between-functions-and-relations-32298

#### Solution Preview

Hello and thank you for posting your question to Brainmass!

The solution is attached below in two files. The files are ...

$2.19